Your problem is very interesting. Are you sure it is Tiger Woods PGA Tour 2000 and not 2001?
I am having the same problem with Tiger Woods 2001, the CD key I have is 1500-3202233-2068109-2932 but that also does not work.
If you have any joy in locating an alternative key please let me know. I have been trying for a while and I will let you know if I find anything!